"Built in 1925, this historic indoor heated swimming pool at WaveHouse Athletic Club is open daily for public use and enjoyment. Offering a variety of activities for every age group including water aerobics, swim lessons, or just some splashing fun. So whether you’re trying to get your heart rate up during an Aqualogics class or looking to take a quick dip, The Plunge has and always will be San Diego’s favorite pool." http://www.belmontpark.com/theplunge/

Belmont Park, a historic oceanfront amusement park located in the Mission Bay area of San Diego, California was developed by sugar magnate John D. Spreckels and opened on July 4, 1925 as the Mission Beach Amusement Center. http://www.belmontpark.com/

The Orca or Killer Whale which Sea world is famous for has quite a story. "Shamu" the original name chosen for the first Orca to appear at Sea World in 1965- has been used to name other Orca appearing at Sea World. https://en.wikipedia.org/wiki/Shamu

The Sky Tower, a 320-foot (98 m) Gyro tower that was built in 1969. Refurbished in 2007 with a new capsule, the ride gives passengers a six-minute view of Sea World and San Diego. It rises at a rate of 150 feet per minute (46 m/min) while spinning slowly (1.02rpm). The attraction hosts views of Mission Bay and other parts of San Diego https://en.wikipedia.org/wiki/SeaWorld_San_Diego#SeaWorld_Sky_Tower

There are Dolphins active and thriving in the San Diego coastline.( ) You can even visit the Dolphin Encounter at Sea World San Diego to put on a swimsuit and swim along side these docile, super smart, sea worthy friends.

There's a seal/sea lion habitat outside of Sea World that is free to visit in front of the Bahia. can't find too much web info about it- but check out the Bahia Hotel in Mission Beach/Bay and you'll see what's going on- http://www.bahiahotel.com/san-diego-resorts/

In mid summer, on Fiesta Island in Mission Bay, the world famous Over The Line Tournament is hosted by OMBAC. These adult oriented occasions last two weekends and are open to the public. For more info on the next OTL check: http://www.ombac.org/over-the-line/otl-location-and-info